High severity8.6NVD Advisory· Published Mar 19, 2021· Updated Jun 17, 2026
CVE-2020-25097
CVE-2020-25097
Description
An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occurs for certain uri_whitespace configuration settings.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
38- Squid/Squiddescription
- osv-coords30 versionspkg:rpm/suse/squid3&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/almalinux/libecappkg:rpm/almalinux/libecap-develpkg:rpm/suse/squid&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/squid&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/squid&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/squid&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/squid&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/squid&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/squid&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/squid3&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS
< 3.1.23-8.16.37.18.1+ 29 more
- (no CPE)range: < 3.1.23-8.16.37.18.1
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 3.5.21-26.35.1
- (no CPE)range: < 3.5.21-26.35.1
- (no CPE)range: < 3.5.21-26.35.1
- (no CPE)range: < 3.5.21-26.35.1
- (no CPE)range: < 3.5.21-26.35.1
- (no CPE)range: < 4.15-4.18.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.16-1.5
- (no CPE)range: < 4.15-lp152.2.9.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 3.5.21-26.35.1
- (no CPE)range: < 4.15-4.18.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 4.15-5.26.1
- (no CPE)range: < 3.1.23-8.16.37.18.1
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_manager:-:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
9- www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patchnvdMailing ListPatchVendor Advisory
- www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patchnvdMailing ListPatchVendor Advisory
- github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6nvdPatchThird Party Advisory
- security.gentoo.org/glsa/202105-14nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20210727-0010/nvdThird Party Advisory
- www.debian.org/security/2021/dsa-4873nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DJMDRVV677AJL4BZAOLCT5LMFCGBZTC2/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FBXFWKIGXPERDVQXG556LLPUOCMQGERC/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O3RYBDMJCPYGOSURWDR3WJTE474UFT77/nvd
News mentions
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